Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 76b965048eab33588ce560184b1d31b025a9806535f6214bf6b7de837add0e3b:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^